Pharmaceutical product.



UNITED STATES OFFICE.

WILHELM HIEMENZ AND WALTER KROPP, 0F ELBERFEL D, GERMANY, ASSIGNORS T0 FARBENFABRIKEN VORM. FRIEDR. BAYER & CO., 0F ELBERFELD, GERMANY, A

CORPORATION OF GERMANY.

PHARMACEUTICAL PRODUCT.

No Drawing.

Patented May 21, 1912'.

To all whom it may concern:

Be it known that we, WILIIELM HmMnNz and IVALTER KROI'P, doctors of philosophy, chemists, citizens of the German Empire, residing at Elberfeld, Germany, have invented a new Pharmaceutical Product, of which the following is a specification.

Our invention concerns the production of the hitherto unknown borneol ester of the diblromo-dihydrocinnamic acid of the formu a:

C 11 -CHBr-OHBr-COOQJI parts of bromin and 400 parts of carbon tetraehlorid is added to this solution which is stirred and well cooled. The liquid is distilled off and the residue is recrystallized from alcohol. The borneol ester of the dibromo-dihydrocinnamie acid is thus obtained in the shape of colorless and tasteless brilliant crystals melting at 73 C.

We claim The herein described borneol ester of the dibromo-dihydrocinnamic acid, which crystallizes from alcohol in the shape of white brilliant crystals melting at.73 (l, difficultly soluble in water and being a valuable sedative, substantially as described.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses:

WILHELM HIEMENZ. [Ls] WALTER KROPP. [L. s.]

Witnesses: I

L. NUFER, A. NUFER. 

